here's a look from genevieve shaw brown. she hit the mat with some of these kids. >> reporter: some say yoga is the fastest growing sport in the nation, with an estimated 20 million people practicing regularly. the latest trend is an ever growing number are pint-sized. there are yoga classes for infants up to teenagers. there are even classes for toddlers like my daughter. >> you're still going to see the foundations of yoga, so there's going to be an awareness of movement and anatomy and breath. there's such a tremendous amount of creativity and there's inner play between the children and teacher. >> reporter: i'm here with a group of 6 to 9-year-olds who are showing me a little bit what a kid's yoga class is like. >> one leg comes up, the other. >> it's going to be a little sillier, more playful. kids are stressed. with social pressures and pressures in school. >> it clears your mind of things that really bothers you. >> i don't have to worry about all my problems. >> reporter: parents should look for a registered children